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E. J. MOLERA 8: J. 0. G EBRIAN.

Electric Switch.

No. 230,321. Patented July 20,1880.

INVENTOR ATTORNEY N.PETER5, PHOTO-UTHDGRAPHER. WASHINGTON. D C.

W NESSES am/ I UNITED STATES PATENT Orrrcng EUSEBIUS J. MOLERA AND JOHNG. OEBRIAN, OF SAN FRANCISCO, GAL.

ELECTRIC SWITCH.

SPECIFICATION forming part of Letters Patent No. 230,321, dated July 20,1880. Application filed J anuury 27, 1880.

To all whom it may concern:

Be it known that we, EUsEEIUs J. MOLERA and JOHN C. OEBRIAN, of SanFrancisco, in the county of San Francisco and State of California, haveinvented certain new and useful Improvements in Electric Switches; andwe do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it pertains to make and use it, reference being had to theaccompanying drawings, which form part of this specification.

Our invention is more especially intended for use in connection withapparatus for reducing to a microscopic scale any matter capable ofbeing photographed, as set forth in separate application for patent.

Our object is to provide improved means whereby one or more circuits maybe closed at predetermined intervals and for any length of time.

The invention consists, first, in the combination, with a plate and pinsadjustable rela tive to the plate-surface, of a device adapted bymovement over the latter to join any pin projecting therefrom andconnected with one electric pole to means which connectwith the oppositepole second, in the combinatiomwith a plate provided with holes in whichpins are adjustable, of a device adapted to move over said plate andjoin any projecting pin connected with one electric pole to meansconnected with the opposite pole; third, in the combination, with anon-conducting plate and conducting-pins adjustable in holes formed inthe plate, of a conduction device adapted to join any two consecutivepins projecting beyond the plate, and means which connect the severalpins in alternate order, respectively, to opposite electric poles;fourth, in the combination, witha non-conducting plate provided with aconducting-band, of conducting-pins fitted in holes formed in the plateand con ducting-strips which connect said pin-holes with the band;fifth, in the combination, with a non-conducting plate provided with aconducting-band and conducting-pins adjustable in holes formed in theplate, of conductingstrips which independently connect the severalpin-holes with the band and a movable conducting device adapted to joinany two consecutive pins which may project beyond the plate; sixth, inthe combination, with a non-conducting plate provided with two or moreconducting-bands, of concentric sets of conducting-pins adjustable inholes formed in the plate and comlucting-strips which independentlyconnect the several pin-holes of each set to the band of said set;seventh, in the combination, with a non-conducting plate and a circularseries of conducting-pins having sliding movement in holes formed in theplate, of a conducting-roller, a radial arm which supports the latter,and means which actuate said roller-arm in circular movement; eighth, inthe combination, with a non-conducting plate provided with aconducting-band, adjustable conducting-pins, and conductingstrips, whichconnect said pin-holes with the band, of a conducting-plate providedwith conducting-pins adapted to be adjusted in holes formed in thenon-conducting plate, a conducting device having movement over thelatter, and means which connect the conducting-plate and theconducting-band to opposite electric poles; ninth, in the combination,with a non-conducting plate provided with a conducting-band, conductingslide-pins, and conducting-strips which connect said pin-holes with theband, of a comlucting-plate provided with COll(lllGtlllg-]')lllS adaptedto slidein holes formed in the non-con ducting plate alternately withthe first-mentioned pin-holes, a conducting device which moves over thenon-conducting plate, and means which connect the conducting-plate andthe. conducting-band to opposite electric poles.

Referring to the drawings, Figure lis a view, partly in vertical centralsection. Fig. 2 is a plan view.

The upper plate, A, is made of non-conducting material, and is providedwith a set of conducting-pins, a, adapted to have sliding movement inholes 1) formed in said plate.

The lower plate, B, is made of conducting material, and is provided witha set of conducting-pins, c. The lower extremities of the latter havesliding movement in holes formed in said plate, and their upperextremities have like movement in holes (Z formed in the nonconductingplate. Holes d alternate in suecession with holes Z) in the latterplate, and

hence when both sets of pins project beyond the upper surface of thenon-conducting plate any one pin of the latter plate is intermediate twopins of the conducting-plate, and thereverse. The non-cond uctin g plateis provided with one or more conducting-bands e.

Conducting-strips f independently connect lhe several pin-holes b withthe respective band. If one band only is used, there will be but onecircular row of pin-holes, all connected to the said band. If more thanone row of pin-holes is formed on the plate, there will be acorresponding number of bands, and the pinholes I) of each row will beconnected tolhe appropriate band. Y

In using a single circuit the conductingplate is connected to oneelectric pole and the conducting-band on the non-conducting plate isconnected to the opposite electric pole. In employing more than onecircuit the conducting-plate is connected to one electric pole of allthe batteries and the comlucting-bands are respectively connected to theopposite poles of the several batteries.

Rollers (),made of conducting material, are mounted on radial arms D.These arms are actuated in their circular movement by any suitablemeans. Preferably we employ clockwork or other automatic device, so thatthe rollers may be moved over the plate at a predetermined rate. Eachroller is adapted to serve as a conducting device to join any twoconsecutive pins to c which may project above plate A, thereby closingthe circuit which passes through said circular row of pins on thenon-conducting plate. There may be one or more rollers for each row ofpins. Knowing the time required for a roller to complete its revolution,and also knowing the number of pins in the row over which said rollermoves, it is evident that by projecting any two consecutive pins abovethe surface of plate A we may cause the circuit to be closed at anydesired time. As many of these pairs of pins maybe brought into use asare the different times that the circuit is to be closed for onerevolution of the roller. By projecting above plate A an y n umber ofconsecutive pins greater than two it is evidentthat the circuit may bemaintained closed for a corresponding longer duration of time.

The foregoing description sets forth one specific form of mechanism forcarrying out our invention, and our preferable construction is thusgiven as an illustration of the invention. It is apparent, however,thatchanges, substitutions, and omissions may be made as regards theprev iously-described means, provided only the essential features ofinvention set forth in the following claims are employed.

Having fully described our invention, what we claim as new, and desireto secure by Letters Patent, is-

1. In an electric switch, the combination, with a plate and pinsadjustable relative to its surface, of a device adapted bymovement oversaid plate-surface tojoin pins projecting there from and respectivelyconnected to opposite electric poles, substantially as set forth.

2. In an electric switch, the combination, with a plate provided withholes in which pins are adjustable, of a device adapted to move oversaid plate and join projecting pins respectively connected to oppositeelectric poles, substantially as set forth.

3. In an electric switch, the combination, with a non-conducting plateand conductingpins adjustable in holes formed in the plate, ofaconducting device adapted to join anytwo consecutive pins projectingbeyond the plate,

and means which connect the several pins in alternate order respectivelyto opposite electric poles, substantially as set forth.

4. In an electric switch, the combination, with a non-conducting plateprovided with a conducting-band, of conductiug-pins fitted in holesformed in the plate and conducting-strips which connect said pin-holeswith the band, substantially as set forth.

5. In an electric switch, the combination, with a non-conducting plateprovided with a conducting-band and conducting-pins adjustable in holesformed in the plate, of conducting-strips which independently connectthe several pin-holes with the band and a movable conducting deviceadapted to join any two consecutive pins which may project beyond theplate, substantially as set forth.

6. In an electric switch, the combination, with a non-conducting plateprovided with two or more comlucting-bands, of concentric sets ofconducting-pins adjustable in holes formed in the plate andconducting-strips which independently connect the several pinholes ofeach set to the band of said set, substantially as set forth.

7. In an electric switch, the combination, with a non-comlucting plateand conductingpins adjustable relative to its surface, of a conductingdevice adapted to join two pins projecting beyond its surface andrespectively connected to opposite electric poles, substantially as setforth.

8. In an electric switch, the combination, with a non-conducting plateprovided with a set of adjustable conducting-pins and a conducting-plateprovided with an independent set of adjustable conducting-pins adaptedto pass through holes in the non-conducting plate, said two sets of pinsbeing respectively connected to opposite electric poles, of a conductingdevice which travels over the non-conducting plate and joins aprojecting pin of its set with a projecting pin of the conductingplateset, substantially as set forth.

9. In an electric switch, the combination, with a non'eonducting plateand two sets of conducting-pins arranged in a circular row, said setsbeing respectively connected to opposite electric poles and adjustablerelative to the plate-surface, of a conducti n g-roller adapted to joinprojecting pins of opposite sets, and

means for actuating said roller in circular movement over the plate,substantially as set forth.

10. In an electric switch, the combination, with a non-conducting plateprovided with a conducting-band, adjustable conducting-pins, andconducting-strips which connect said pinholes with the band, of aconducting-plateprovided with com'lucting-pins adapted to be adjusted inholes formed in the non-conducting plate, a conducting device havingmovement over the latter, and means which connect the conducting-plateand the conducting-band to opposite electric poles, substantially as setforth.

11. In an electric switch, the combination, with a non-conducting plateprovided with a conducting-band, conducting; slide pins, andconducting-strips which connect said pin-holes with the band, of aconducting-plate provided with conducting-pins adapted to slidein hol iformed in the non-conducting plate alternately with the first-mentionedpin-holes, a conducting device which moves over the non-conductingplate, and means which connect the conducting-plate and theconducting-band to opposite electric poles, substantially as set forth.In testimony that we claim thetoregoing I, EUSEBIUS J. MOLERA, dohereunto set my hand this 16th day of January, A. D. 1880.

EUSEBIUS J. MOLERA. Witnesses:

THOMAS D. GRAHAM, I. 0. WEGENER. And I, JOHN C. OEBRIAN, do hereunto setmy hand this 15th day of December, 1879.

. JOHN G. OEBRIAN. Witnesses:

T. B. HALL, A. W. BRIGHT.

